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Enhanced durability and reactivity for zinc ferrite desulfurization sorbent

Description: AMAX Research Development Center (AMAX R D) has been investigating methods for enhancing the reactivity and durability of the zinc ferrite desulfurization sorbent. Zinc ferrite sorbents are intended for use in desulfurization of hot coal gas in integrated gasification combined cycle (IGCC) or molten carbonate fuel cell (MCFC) applications. For the present program, the reactivity of the sorbent may be defined as its sulfur sorption capacity at the breakthrough point and at saturation in a bench-… more
Date: May 18, 1987
Creator: Jha, M. C.; Baltich, L. K. & Berggren, M. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Carbide Cathode Studies, Physical and Chemical Redeposition. Quarterly Progress Report, April 1, 1962-June 30, 1962

Description: The utilization of physical and chemical processes to reduce the rate of vapor loss of thermionic emitters composed of mixed carbides of U and Zr in order to increase the permissible operating temperature is being studied. Preliminary, qualitative results obtained from study of physical redeposition processes showed that increasing the collector temperature may markedly reduce the rate of weight loss from a UC emitter operating at 2053 deg K. The requisite experimental equipment for studies of … more
Date: July 18, 1962
Creator: Weinberg, A. F.; Yang, L. & Langer, S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Increasing the Life of Cutting Fluids Used in the LLNL Machine Shop

Description: The objective of this study was to extend the working life of cutting fluids used in metal machining operations at LLNL. The characteristics of the fluids in nine different machines were studied. The pH, bacteria level, percent coolant concentrate, percent tramp oil, and total undissolved solids were monitored on a week-to-week basis for 6 weeks. During this time, the criteria and procedures used for changing the cutting fluids in the machines were also observed. Although the study is incomplet… more
Date: November 18, 1981
Creator: Cadena, C. A.; da Roza, R. A.; Johnson, J. S. & Szidon, R. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Full-scale demonstration Low-NO sub x Cell trademark Burner retrofit

Description: The overall objectives of the full-Scale Low-NOx Cell{trademark} Burner (LNCB{trademark}) Retrofit project is to demonstrate the cost-effective reduction of NOx generated by a large, base-loaded (70% capacity factor or greater), coal-fired utility boiler. Specific objectives include: (1) At least 50% NOx reduction over standard two-nozzle cell burners, without degradation of boiler performance or life; (2) acquire and evaluate emission and boiler performance data before and after the retrofit t… more
Date: March 18, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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/sup 238/PuO/sub 2//Mo-50 wt% Re compatibility at 800 and 1000/sup 0/C

Description: The compatibility of Mo-50 wt % Re with /sup 238/PuO/sub 2/ was investigated after heat treatments of up to 720 days at 800/sup 0/C and 180 days at 1000/sup 0/C. At 800/sup 0/C, a 1-..mu..m thick, continuous layer of molybdenum oxide resulted. At 1000/sup 0/C, the oxide reaction product contained some plutonium and did not appear continuous. At 1000/sup 0/C, a layer of intermetallic formed at the Mo-Re edge, beneath the oxide layer, creating a barrier between the Mo-50 wt % Re and the /sup 238/… more
Date: July 18, 1980
Creator: Schaeffer, D. R. & Teaney, P. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Full-scale demonstration Low-NO sub x Cell trademark Burner retrofit

Description: The overall objectives of the full-Scale Low-NO{sub x} Cell{trademark} Burner (LNCB{trademark}) Retrofit project is to demonstrate the cost-effective reduction of NO{sub x} generated by a large, base-loaded (70% capacity factor or greater), coal-fired utility boiler. Specific objectives include: (1) At least 50% NO{sub x} reduction over standard two-nozzle cell burners, without degradation of boiler performance or life; (2) Acquire and evaluate emission and boiler performance data before and af… more
Date: March 18, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Theoretical approach for enhanced mass transfer effects in-duct flue gas desulfurization processes

Description: Bench-scale and pilot-scale experiments have been conducted to measure the mass transfer and kinetic rates at simulated duct injection conditions. Section 2 describes the tank reactor test results. The stirred tank reactor was used to study absorption of SO{sub 2} into saturated Ca(OH){sub 2} solutions with varied ionic strengths. The results of current experiments were compared with previous tests using saturated Ca(OH){sub 2} solution and 0.1 M CaCl{sub 2}. Section 3 summarizes the status of … more
Date: January 18, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Benzene/nitrous oxide flammability in the precipitate hydrolysis process

Description: The HAN (hydroxylamine nitrate) process for destruction of nitrite in precipitate hydrolysis produces nitrous oxide (N2O) gas as one of the products. N2O can form flammable mixtures with benzene which is also present due to radiolysis and hydrolysis of tetraphenylborate. Extensive flame modeling and explosion testing was undertaken to define the minimum oxidant for combustion of N2O/benzene using both nitrogen and carbon dioxide as diluents. The attached memorandum interprets and documents the … more
Date: September 18, 1989
Creator: Jacobs, R A
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Complex Hydride Compounds with Enhanced Hydrogen Storage Capacity

Description: The United Technologies Research Center (UTRC), in collaboration with major partners Albemarle Corporation (Albemarle) and the Savannah River National Laboratory (SRNL), conducted research to discover new hydride materials for the storage of hydrogen having on-board reversibility and a target gravimetric capacity of ≥ 7.5 weight percent (wt %). When integrated into a system with a reasonable efficiency of 60% (mass of hydride / total mass), this target material would produce a system gravimetri… more
Date: February 18, 2008
Creator: Mosher, Daniel A.; Opalka, Susanne M.; Tang, Xia; Laube, Bruce L.; Brown, Ronald J.; Vanderspurt, Thomas H. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Wood Pulp Digetster Wall Corrosion Investigation

Description: The modeling of the flow in a wood pulp digester is but one component of the investigation of the corrosion of digesters. This report describes the development of a Near-Wall-Model (NWM) that is intended to couple with a CFD model that determines the flow, heat, and chemical species transport and reaction within the bulk flow of a digester. Lubrication theory approximations were chosen from which to develop a model that could determine the flow conditions within a thin layer near the vessel wal… more
Date: September 18, 2003
Creator: Giles, GE
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Integrated dry NO sub x /SO sub 2 emissions control system

Description: A per the DOE Cooperative Agreement No. DE-FC22-91PC90550 dated March 11, 1991, Public Service Company of Colorado has prepared the following quarterly report for Phase I, IIA, and IIB of the Integrated Dry NO{sub x}/SO{sub 2} Emissions Control System Project. This project includes Low NO{sub x} Burners with post firing air injection, humidification, and dry sorbent injection. This quarterly report covers the quarterly period April, May, and June, 1991. This report covers project activities for… more
Date: October 18, 1991
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Computer modeling of nuclear waste storage canister corrosion

Description: Current plans for nuclear waste disposal include placing the waste in a canister to isolate it from the repository environment for 1000 years. Corrosion prediction techniques are currently inadequate to quarantee the canister performance over this length of time. We are attempting to better predict the corrosion process with the help of computer modeling. We developed a program to calculate anodic and cathodic polarization curves using Tafel slopes, equilibrium exchange current densities, and o… more
Date: October 18, 1979
Creator: Cottrell, P.T.; Ludemann, W.D. & McCright, R.D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Control of pyrite surface chemistry in physical coal cleaning

Description: The separation of pyrite from coal by flotation is based on exploiting the wettability difference between coal and pyrite. There is evidence that the wettability of coal pyrite changes upon superficial oxidation. Therefore, the oxidation of coal pyrite has been studied under carefully controlled electrochemical conditions. In order to identify the species responsible for the changes in wettability, the surface products formed during oxidation have been identified by means of various surface ana… more
Date: March 18, 1992
Creator: Yoon, R. H.; Luttrell, G. H.; Zachwieja, J. B. & Mielczarski, J. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Coal Reburning for Cyclone Boiler NO[sub x] Control Demonstration

Description: The Coal Reburning for Cyclone Boiler NO[sub x], Control Demonstration project progress for July, August, and September 1992 is identified in this tenth quarterly report and pertains to the on-going activities of Phase III Operation and Disposition. The project involves retrofitting/testing the reburning technology at Wisconsin Power Light's 100 MWe Nelson Dewey Unit [number sign]2 in Cassville, Wisconsin to determine the commercial applicability of this technology to reduce NO[sub x] emission … more
Date: December 18, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Materials compatibility study of 316 stainless steel at the LLL tritium facility

Description: Stress corrosion tests were conducted on 316 VIM/VAR stainless steel as part of the Tritium Facility's Quality Assurance Program. Initial results under severe conditions indicate earlier-than-expected failure. We are expanding our tests to further examine this problem.
Date: April 18, 1978
Creator: Monahan, B. G.; Gede, V. P.; Landon, P. R.; Colmenares, C. A. & Biel, T. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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A new model of coal-water interaction and relevance for dewatering

Description: This project is concerned with a basic scientific question concerning the properties of coal- to what extent is the ability of coal to hold moisture a manifestation of the well-known ability of coal to swell, when exposed to good solvents The question implies that the long-held belief that coal holds a significant portion of its moisture by classical capillary condensation processes, is possibly in error. This seems to be a very real possibility for low rank coals, i.e. lignites. To explore thi… more
Date: December 18, 1992
Creator: Suuberg, E.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Copper solubility in DWPF, Batch 1 waste glass: Update report

Description: The Late Washing'' Step in the processing of precipitate will require the use of additional copper formate in the Precipitate Reactor to catalyze the hydrolysis reaction. The increased copper concentration in the melter feed increases the potential for metal precipitation during the vitrification of the melter feed. This report describes recent results with a conservative glass selected from the DWPF acceptable region in the Batch 1 Variability Study.
Date: September 18, 1992
Creator: Schumacker, R. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Innovative Clean Coal Technology (ICCT): 180 MW demonstration of advanced tangentially-fired combustion techniques for the reduction of nitrogen oxide (NO sub x ) emissions from coal-fired boilers

Description: This quarterly report discusses the technical progress of a US Department of Energy (DOE) Innovative Clean Coal Technology (ICCT) Project demonstrating advanced tangentially-fired combustion techniques for the reduction of nitrogen oxide (NO{sub x}) emissions from a coal-fired boiler. The project is being conducted at Gulf Power Company's Plant Lansing Smith Unit 2 located near Panama City, Florida. The primary objective of this demonstration is to determine the long-term effects of commerciall… more
Date: May 18, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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High efficiency shale oil recovery

Description: The overall project objective is to demonstrate the high efficiency of the Adams Counter-Current shale oil recovery process. The efficiency will first be demonstrated at bench-scale, in the current phase, after which the demonstration will be extended to the operation of a small pilot plant. Thus the immediate project objective is to obtain data on oil shale retorting operations in a small batch rotary kiln that will be representative of operations in the proposed continuous process pilot plant… more
Date: July 18, 1992
Creator: Adams, C. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Survey of technology for storage of thermal energy in heat transfer salt

Description: The widespread use of nitrate-based fused salt mixtures as heat transport media in the petroleum and chemical process industries and in metallurgical heat-treatment operations has led to the development of satisfactory equipment for handling and containing these materials. A mixture known as heat transfer salt (HTS), which is composed of 40 percent NaNO/sub 2/, 7 percent NaNO/sub 3/, and 53 percent KNO/sub 3/ by weight, has been used commercially in large quantities as a heat transfer fluid. It… more
Date: January 18, 1977
Creator: Silverman, M. D. & Engel, J. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Radiation stability of a hydrogen getter material (DPPE). [Dimerized phenyl propargyl ether containing Pd on CaCO/sub 3/ catalyst]

Description: An investigation was made on a hydrogen getter material (DPPE) to determine its radiation stability. Such material has potential for nuclear industry applications. The material is composed of 75 percent of an unsaturated organic compound (1,6-diphenoxy-2,4-hexadiyne) and 25 percent catalyst (5 percent palladium on calcium carbonate). The radiation stability of this material and of the hydrogenated product was determined by exposing them to gamma radiation in air and vacuum and analyzing for rad… more
Date: October 18, 1976
Creator: Kazanjian, A. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fundamental Study of Ammonia-Sulfur Dioxide Reactions to Form Solid Particles. Final Report

Description: The effects of reaction residence time, presence of inert particles and moisture content on the SO{sub 2} removal and the product particle size distributions have been determined. Results indicated that both gas phase and particle phase reach equilibria in a very short time. The presence of inert particles increases the SO{sub 2} removal efficiency slightly, with a greater increase in removal efficiency at higher surface areas. Moisture content is the most important parameter affecting SO{sub 2… more
Date: January 18, 1994
Creator: Biswas, P. & Bai, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Chemistry of bimetallic and alloys surfaces

Description: We have continued our work on elucidating the underlying principles that govern chemical reactions occurring on bimetallic and alloy surfaces. Our goal is to aid in the atomic level explanation of the reactivity and selectivity of alloy and bimetallic cluster catalysts and to provide a fundamental basis for the design of new catalysts with improved performance. Our approach is to use a battery of surface science methods to obtain fundamental data on the thermochemistry and kinetics of the adsor… more
Date: October 18, 1991
Creator: Koel, Bruce E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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